JP3053082B2 - Adjustable structure of vertical feed mechanism of rice transplanter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical feed for feeding seedlings placed on a seedling mounting table to a seedling take-out port side by means of a seedling feeding belt arranged vertically along a seedling mounting surface of the seedling mounting table. The present invention relates to a vertical feed mechanism adjusting structure for changing a seedling feed amount of a vertical feed mechanism in a rice transplanter having a mechanism.

[0002]

2. Description of the Related Art In a rice transplanter, a seedling planting mechanism is configured so that a seedling is taken out through a seedling take-out port and planted on a rice field. The placed seedlings are configured to be sent to the seedling removal port side by a vertical feeding mechanism. Such a rice transplanter is generally configured so that the amount of seedlings collected by the seedling planting mechanism can be changed. Therefore, when the amount of seedlings collected by the seedling planting mechanism is changed, the seedlings of the vertical feeding mechanism are adjusted accordingly. It is necessary to change the feeding amount so that the seedlings placed on the seedling mounting table can be sent to the seedling removal opening side by the vertical feeding mechanism regardless of the change in the seedling picking amount of the seedling planting mechanism. is there.

[0003] An example of a structure for changing the seedling feed amount of the vertical feed mechanism as described above is disclosed in Japanese Utility Model Publication No. 4-36579. In this structure, in a vertical feed mechanism provided with a seedling feed belt (8 in FIG. 2 of the above publication), an operation arm (10 in FIG. 2 of the above publication) provided below the vertical feed mechanism is By moving the driving member (24 in FIG. 2 of the above-mentioned publication) from the standby position to the upper feed position via the linking member (23 and 11 in FIG. 2 of the above-mentioned publication), vertical feed is performed. It is configured to operate the mechanism.

In this case, a wire (29 in FIG. 2 of the above publication) is connected to a linking member (23 in FIG. 2 of the above publication), and the standby position of the linkage member (operation arm) is linked by the wire. It is configured to change the amount of seedling feed of the vertical feed mechanism by changing along the moving direction of the member (operation arm). Therefore, when the standby position of the link member (operation arm) of the vertical feed mechanism is brought closer to the upper feed position (above the paper in FIG. 2 of the above publication), the link member (operation arm) is moved from the standby position by the drive member. The stroke at the time of moving operation to the upper feed position becomes smaller, and the seedling feed amount of the vertical feed mechanism becomes smaller. Conversely, link member (operation arm)
When the standby position is separated from the upper feed position (below the sheet in FIG. 2 of the above-mentioned publication), the stroke when the driving member moves the linking member (operation arm) from the standby position to the upper feed position is reduced. As a result, the seedling feed amount of the vertical feed mechanism increases.

[0005]

SUMMARY OF THE INVENTION In a vertical feed mechanism,
When moving the operation arm of the vertical feed mechanism from the standby position to the upper feed position by the drive member, if the link member is interposed between the drive member and the operation arm as described above, In some cases, a mechanical error may occur or mud or the like may be trapped between the space or the linking member and the operation arm. When such mechanical errors or pinching of mud or the like occur, the operation arm may not be moved from the standby position to the upper feed position with a desired stroke with high accuracy, and the vertical feed mechanism may be used to remove the seedlings. It may not be sent to the side with high accuracy. SUMMARY OF THE INVENTION It is an object of the present invention to provide a structure for adjusting a vertical feed mechanism of a rice transplanter so that seedlings can be accurately fed to a seedling outlet by a vertical feed mechanism.

[0006]

The feature of the present invention resides in the following structure in the vertical feed mechanism adjusting structure of the rice transplanter described above. [1] A vertical feeding mechanism for feeding seedlings placed on the seedling mounting table to a seedling takeout opening side by a seedling feeding belt arranged vertically along a seedling mounting surface of the seedling mounting table. An operation arm provided at a lower portion, a driving member that contacts the operation arm and moves the operation arm from the standby position to the upper feed position to operate the vertical feed mechanism, and attaches the operation arm to the standby position side. And an inner arm of the wire is connected to the operation arm, the wire is extended from the operation arm to the upper feed position side, and an end of the outer wire of the wire on the operation arm side is planted. Attach it to the fixed part of the seedling stage below the upper end of the feed belt, and push and pull the inner wire of the wire to move the standby position of the operation arm along the movement direction of the operation arm. Thus, the feed amount of the seedlings of the vertical feed mechanism is changed.

[2] A vertical feeding mechanism for feeding the seedlings placed on the seedling mounting table to the seedling takeout opening side by a seedling feeding belt arranged vertically along the seedling mounting surface of the seedling mounting table, An operation arm provided at a lower portion of the feed mechanism, a driving member that contacts the operation arm and moves the operation arm from the standby position to an upper feed position to operate the vertical feed mechanism, and moves the operation arm to the standby position. A biasing member for biasing the inner side of the wire, the inner wire of the wire is linked to the operation arm, the wire is extended from the operation arm to the upper feed position side, and the inner wire of the wire is adjusted for the seedling collection amount. And attach the end of the outer wire on the operation arm side to the fixed portion of the seedling mounting table located below the upper end of the seedling feed belt. By changing the standby position of the operation arm along the moving direction of the operation arm by pushing and pulling the inner wire of the hook, the seedling feed amount of the vertical feed mechanism is changed.

[3] In the configuration of [1] or [2], an inner arm of the wire is directly connected to the operation arm.

[4] In any one of the constitutions [1], [2], and [3], the fixing portion of the seedling mounting base extends in the left-right direction of the seedling mounting base through the winding path of the seedling feeding belt. , A reinforcing member attached to the seedling mounting table.

[0010]

[I] According to the features of claims 1 and 2, the drive member directly contacts the operation arm of the vertical feed mechanism, and the operation arm is moved from the standby position to the upper feed position by the drive member. The longitudinal feed mechanism operates, and the features of the first and second aspects do not include the linking member interposed between the driving member and the operation arm provided in the "prior art".

As described above, according to the first and second aspects of the present invention, the operation arm of the vertical feed mechanism is directly moved and operated by the driving member without the interposition of the linking member.
No mechanical error occurs between the drive member and the linking member or between the linking member and the operation arm, or mud is trapped between the drive member and the operation arm. Is precisely moved from the standby position to the upper feed position with a desired stroke. Further, according to the features of the first and second aspects, the linking member interposed between the driving member and the operation arm provided in the "prior art" becomes unnecessary, so that the number of parts is reduced by the linking member. Can be.

[II] According to the features of claims 1 and 2, the inner arm of the wire is linked to the operation arm provided at the lower part of the vertical feed mechanism, and the wire extends to the upper feed position side, and the operation arm Of the operating arm is determined by the inner wire of the wire and the urging member. Thus, according to the first and second aspects of the present invention, the inner wire of the wire is pulled (the inner wire of the wire is pulled by the adjusting lever for the amount of seedlings), and the standby position of the operation arm is set. When approaching the upper feed position along the moving direction, the stroke when the operation arm is moved from the standby position to the upper feed position by the driving member is reduced, and the seedling feed amount of the vertical feed mechanism is reduced. Become. Conversely, by pushing the inner wire of the wire (by pushing the inner wire of the wire with the adjusting lever for the amount of seedlings), the standby position of the operating arm is shifted from the upper feed position along the moving direction of the operating arm. If separated, the stroke when the operation arm is moved from the standby position to the upper feed position by the drive member becomes larger, and the seedling feed amount of the vertical feed mechanism becomes larger.

[III] According to the features of claims 1 and 2, as described in the above item [II], the operating arm provided at the lower part of the vertical feed mechanism,
In a state where the inner wire of the wire is linked, the end on the operation arm side of the outer wire of the wire is arranged below the upper end of the seedling feed belt. Therefore,
The end portion of the outer wire on the operation arm side approaches the operation arm, and the length of the inner wire protruding from the outer wire of the wire toward the operation arm is reduced.

In a configuration in which the standby position of the operation arm is determined by the inner wire of the wire and the biasing member, if the length of the inner wire protruding is long, the overall length of the wire is consequently increased. Will be long. In this case, since the inner wire of the wire is relatively easy to extend, if the length of the inner wire of the wire is long as described above, when the inner wire of the wire extends, There is a possibility that a state where the standby position of the operation arm is not accurately set due to a large amount of wire elongation may occur.

According to the first and second aspects of the present invention, the length of the inner wire of the relatively stretchable wire is reduced as described above, and as a result, the overall length of the wire is shortened accordingly. Therefore, when the inner wire of the wire extends, the amount of extension of the inner wire of the wire as a whole can be suppressed to a small amount, and the inner arm of the wire and the biasing member allow the operation arm to move. The standby position can be set accurately.

[IV] According to the feature of claim 3, similar to the case of claim 1 or 2, the "action" described in the above-mentioned [I] [II] [III] is provided. It has the following "action". "Conventional technology"
Then, a wire is connected to a linking member interposed between the driving member and the operation arm, and the standby position of the linking member (operation arm) is changed by the wire along the moving direction of the linking member (operation arm). The structure is such that the seedling feed amount of the vertical feed mechanism is changed. As a result, as described in “Problems to be Solved by the Invention”, a mechanical error occurs between the driving member and the linking member, or between the linking member and the operation arm, and mud is trapped. If this occurs, the standby position of the operation arm may not be set with high accuracy.

According to a third aspect of the present invention, there is provided an urging member for directly connecting the inner wire of the wire to the operation arm of the vertical feed mechanism, extending the feed arm toward the feed position, and urging the operation arm toward the standby position. The standby position of the operation arm is determined by the inner wire of the wire and the biasing member. Thus, according to the features of claim 3, a state in which a mechanical error occurs or mud is trapped between the driving member and the linking member or between the linking member and the operation arm. Does not occur, and the standby position of the operation arm can be accurately set by the inner wire of the wire and the biasing member.

[V] According to the feature of claim 4, the "action" described in the above-mentioned [I] to [IV] is provided as in any one of claims 1 to 3. In addition to the above, the following “action” is provided. According to the feature of claim 4, the reinforcing member extending in the left-right direction of the seedling placing stand is attached to the seedling placing stand through the winding path of the seedling feeding belt, thereby increasing the overall strength of the seedling placing stand. According to this feature, the end of the wire on the operation arm side of the outer wire is attached to the reinforcing member, so that the end of the wire on the operation arm side of the outer wire is sufficiently provided by the reinforcing member. It can be supported with a high strength.

According to the fourth aspect of the present invention, since the reinforcing member is attached to the seedling mounting table through the winding path of the seedling feeding belt, the reinforcing member does not largely come out of the range of the existing vertical feeding mechanism. There is no waste in the space for arranging the reinforcing members. If the reinforcing member is arranged through the winding path of the seedling feed belt, the reinforcing member will be located below the upper end of the seedling feed belt, so the outer wire of the wire as described in the above item [III] The state in which the end on the operation arm side is positioned lower than the upper end of the seedling feed belt can be easily obtained.

[0020]

According to the first and second aspects of the present invention, in the structure for adjusting the vertical feed mechanism of the rice transplanter, the operating arm of the vertical feed mechanism is directly moved and operated by the drive member without the interposition of the linking member. As a result, the operation arm is accurately moved from the standby position to the upper feed position by the drive member with a desired stroke, and the vertical feed mechanism allows the seedling to be accurately fed to the seedling removal port side. Planting performance could be improved. According to the features of claims 1 and 2, a linking member interposed between the driving member and the operation arm provided in the "prior art" is not required, so that the number of parts in the vertical feed mechanism is equal to the number of linking members. Was reduced, and the structure of the vertical feed mechanism and the production process were simplified.

According to the first and second aspects of the present invention, when the standby position of the operation arm of the vertical feed mechanism is determined by the inner wire of the wire and the urging member, the length of the inner wire of the wire which is relatively easily stretched is determined. And the length of the inner wire as a whole can be reduced to a small value, so that the standby position of the operation arm can be set with high accuracy, and the seedlings can be removed by the vertical feed mechanism. The plant was able to be sent stably to the mouth, and the planting performance of the rice transplanter could be further improved.

According to the features of claim 3, claim 1 or 2
"Effects of the Invention" of Claim 1 or 2 as in the case of
In addition to this “effect of the invention”, the following “effect of the invention” is provided. According to the feature of the third aspect, by connecting the inner wire of the wire directly to the operation arm of the vertical feed mechanism, a mechanical error between the driving member and the linking member or between the linking member and the operation arm is reduced. This can prevent the situation in which the occurrence of turbulence or the trapping of mud or the like can be prevented beforehand, so that the standby position of the operation arm can be set more accurately. This allows
The vertical feeding mechanism allowed the seedlings to be more stably fed to the seedling take-out port side, and the planting performance of the rice transplanter could be further improved.

According to the feature of claim 4, the "effect of the invention" of the claims 1 to 3 is provided similarly to the case of any one of the claims 1 to 3, and the "effect of the invention" is included in the "effect of the invention". In addition, it has the following "effects of the invention". According to the feature of the fourth aspect, the strength of the entire seedling placing table is enhanced by the reinforcing member, and the end of the outer wire of the wire on the operation arm side can be supported with sufficient strength. Was able to improve durability. According to the feature of claim 4, since the winding path of the seedling feeding belt is effectively used to attach the reinforcing member seedling mounting base,
The point that there is no waste in the arrangement space of the reinforcing member and that the state in which the end of the outer wire of the wire on the operation arm side is located below the upper end of the seedling feed belt can be easily obtained, This is advantageous in terms of compactness and simplification of the structure.

[0024]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a feed case 2 receiving power transmission from the machine is connected to a four-link mechanism 1 provided at the rear end of the machine (not shown). 3 and a plurality of planting transmission cases 4 extend rearward from the horizontal frame 3. Transverse frame 3 over the front end of planting transmission case 4
A transmission shaft is constructed in parallel with the above to constitute a transmission structure to the planting transmission case 4, a seedling planting mechanism 5 is provided at the rear end of the planting transmission case 4, and a seedling is planted above the planting transmission case 4. A seedling mounting table 6 that reciprocates sideways with a constant stroke in the left and right directions in conjunction with the planting operation of the mechanism 5 is provided to constitute a seedling planting device mounted on a riding type rice transplanter.

Next, the structure of the reciprocating lateral movement of the seedling mounting table 6 will be described. As shown in FIG. 2 and FIG.
A laterally extending reinforcing frame 7 (corresponding to a fixing portion and a reinforcing member) is stretched over the entire back surface of the base material to reinforce the seedling mounting base 6 in the assembled state. A side wall 6A that divides the mat-shaped seedlings W for each planting line is provided on the seedling stage 6, and the seedling stage 6 is divided by the side wall 6A into a seedling stage portion for each planting line.
The reinforcing frame 7 reinforces the seedling mounting table 6 in the assembled state.

As shown in FIGS. 2 and 3, the reinforcing frame 7 penetrates an internal space (a winding path of a belt 16 (corresponding to a seedling feeding belt) described later) surrounded by a vertical feeding device 8 described later.
The first bracket 9 extends forward from the first bracket 9, and the lateral feed mechanism A of the seedling mounting table 6 is connected to the first bracket 9. FIG.
And the spiral shaft 1 from the feed case 2 as shown in FIG.
0 is extended laterally, and a movable body 11 which is externally fitted to the helical shaft 10 and moves laterally in the axial direction of the helical shaft 10 is provided, and a top member 12 which engages with the helical groove of the helical shaft 10 is provided on the movable body 11. The movable body 11 is configured so that the movable body 11 is laterally moved integrally with the top member 12 by the rotation of the helical shaft 10.
The first bracket 9 and the first bracket 9 are connected via a connecting member 13. With the above configuration, the spiral shaft 10 is rotated by the drive mechanism (not shown) of the feed case 2 to move the moving body 11 reciprocally and laterally with a constant stroke, and the seedling mounting table 6 is reciprocally laterally moved laterally with a constant stroke. Let it.

Next, the vertical feeder 8 will be described. As shown in FIGS. 2, 3, and 4, the driving pulley 1 located below
4 and a driven pulley 15 located above, a belt 16 with a projection is wound to form a seedling feed belt mechanism 8a (corresponding to a vertical feed mechanism).
Are arranged side by side for each planting strip. The drive pulley 14 is provided with an operation arm 17 interlocked via a one-way clutch 20. In the descending direction in which the seedling feed belt mechanism 8a sends the seedling W downward, the drive pulley 14 and the operation arm 17 rotate integrally, The one-way clutch 20 is configured such that the interlocking state between the drive pulley 14 and the operation arm 17 is cut off in the anti-downward direction, and a helical coil that urges the operation arm 17 toward the anti-downward side of the seedling feed belt mechanism 8a. A spring 23 (corresponding to an urging member) is provided.

As a result, the drive arm 19 provided on the rotating shaft 18 which always projects and protrudes from the feed case 2 is provided.
The rotation trajectory (corresponding to the drive member) and the rotation trajectory of the operation arm 17 coincide with each other at the stroke end of the reciprocating lateral movement of the seedling mounting table 6, and as shown in FIG. Is moved from the standby position T to the upper feed position S, so that the seedling feed belt mechanism 8a feeds the seedlings W to the seedling takeout opening a side.

As shown in FIG. 3, an adjusting lever 25 for setting the standby position T of the operating arm 17 by urging the helical spring 23 is provided, and the adjusting lever 25 and the operating arm 17 are connected by a wire 21 having a Bowden cable structure. Linked and linked. The end of the wire 21 on the operation arm 17 side of the outer wire 21U is connected to the support member 22 of the seedling mounting table 6 so as to be relatively movable within a predetermined range in the axial direction of the wire 21 to connect the outer receiving portion b. The support member 22 is attached to the reinforcing frame 7 to which the receiving plate 24 is fixed. The inner wire 21 </ b> I of the wire 21 is directly connected to the operation arm 17, and the inner wire 21 </ b> I is connected to the support member 22 above the operation arm 17 (the operation arm 1).
7 (the feed position S side above).

As shown in FIG. 3, the outer wire 21U
Is urged toward the adjustment lever 25 side, and the cylindrical portion of the end portion of the outer wire 21U on the operation arm 17 side is
A compression-type helical spring 26 is provided between the flange 21t of the outer wire 21U and the support member 22 so as to be supported by the support member 22 so as not to come off. The urging force acting on the outer wire 21U by the winding spring 26 is set to be larger than the urging force acting on the inner wire 21I connected to the operation arm 17 by the helical spring 23,
The urging force of the operation arm 17 to the standby position T by the helical spring 23 prevents the helical spring 26 from being compressed and deformed.

With the above arrangement, when the seedling collecting amount of the seedling planting mechanism 5 is increased, the adjusting lever 25 is operated to the multiple sides to return the inner wire 21I to the operation arm 17 side. Is changed to the lower position. When the standby position T of the operation arm 17 is separated downward from the upper feed position S in this manner, the stroke when the operation arm 17 is moved from the standby position T to the upper feed position S by the drive arm 19 becomes large. As a result, the seedling feed amount of the seedling feed belt mechanism 8a increases.

Conversely, when the amount of seedlings to be removed by the seedling planting mechanism 5 is to be reduced, the adjusting lever 25 is operated to a small side as shown in FIG. 4, and the inner wire 21I is pulled to the adjusting lever 25 side. Then, the standby position T of the operation arm 17 is changed to the upper standby position t. As described above, when the standby position T of the operation arm 17 is changed to the standby position t close to the upper feed position S, the operation arm 17 is moved by the drive arm 19 to the standby position t.
, The stroke when moving to the upper feed position S becomes smaller, and the seedling feed amount of the seedling feed belt mechanism 8a becomes smaller.

In this case, the movement of the operation arm 17 from the standby position T to the standby position t causes the seedling feed belt mechanism 8a to move.
Is actuated, and the seedling W is sent to the seedling take-out port a side and pressed against the guide rail 27 at the lower end of the seedling placing stand 6. This state is caused by the displacement of the outer wire 21 </ b> U due to the compression deformation of the winding spring 26. Since it can be absorbed, there is no inconvenience that the operation of the adjustment lever 25 becomes heavy or the seedling W is broken by being pressed against the guide rail 27. In this state, the operation arm 1
7 may not immediately move to the standby position t, but the subsequent operation of the seedling feed belt mechanism 8a returns the winding spring 26 to the original state, and immediately the operating arm 17
The standby position T moves to the standby position t.

As shown in FIG. 1, the lower end position of the seedling W placed on the seedling mounting table 6 is changed by a change lever (not shown), a change arm 29, and a bracket 30 bolted to the guide rail 27. Change mechanism B for changing the amount of seedlings
Is configured. As shown in FIG.
The support rod 30 is attached to the J-shaped bent plate 30a,
b is fixed at two places, and the bent plate 30a
The tip of the change arm 29 is inserted into the space 30c formed by the step (1).

Incidentally, reference numerals are written in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the attached drawings by the entry.

[Brief description of the drawings]

FIG. 1 is an overall side view of a seedling planting apparatus.

FIG. 2 is a cross-sectional view showing a connection state between a seedling mounting table and a lateral feed mechanism.

FIG. 3 is a side view showing a structure in the vicinity of a vertical feed device.

FIG. 4 is a side view showing a structure near a lower portion of the vertical feeder.

FIG. 5 is a perspective view of a bracket for adjusting the amount of seedlings collected.

[Explanation of symbols]

 Reference Signs List 6 seedling placing stand 7 seedling placing stand fixing portion, reinforcing member 8a vertical feed mechanism 16 seedling feed belt 17 operating arm 19 drive member 21 wire 21I wire inner wire 21U wire outer wire 23 urging member 25 adjustment of seedling removal amount Lever a Seedling outlet T, t Standby position S Upper feed position W Seedling

Claims (4)

(57) [Claims] 1. A seedling (W) placed on the seedling mounting table (6) by a seedling feed belt (16) arranged vertically along a seedling mounting surface of the seedling mounting table (6). A vertical feed mechanism (8a) for feeding to the take-out port (a) side; an operation arm (17) provided below the vertical feed mechanism (8a); A drive member (19) for operating the vertical feed mechanism (8a) by moving the arm (17) from the standby position (T), (t) to the upper feed position (S); and the operating arm (17). ) To the standby positions (T) and (t), and an inner wire (21I) of a wire (21) linked to the operation arm (17). The wire (21) is moved from the operation arm (17) to the upper feed position ( ) Extends side, the outer wire of the wire (21) (21
U), the end on the operation arm (17) side is attached to a fixed portion (7) of the seedling placing table (6) disposed below the upper end of the seedling feed belt (16); The standby position (T), (t) of the operation arm (17) is changed along the moving direction of the operation arm (17) by pushing and pulling the inner wire (21I) of the wire (21). The vertical feed mechanism (8
a) A vertical feed mechanism adjusting structure of a rice transplanter configured to change the seedling feed amount. 2. A seedling (W) placed on the seedling mounting table (6) by a seedling feed belt (16) vertically arranged along a seedling mounting surface of the seedling mounting table (6). A vertical feed mechanism (8a) for feeding to the take-out port (a) side; an operation arm (17) provided below the vertical feed mechanism (8a); A drive member (19) for operating the vertical feed mechanism (8a) by moving the arm (17) from the standby position (T), (t) to the upper feed position (S); and the operating arm (17). ) To the standby positions (T) and (t), and an inner wire (21I) of a wire (21) linked to the operation arm (17). The wire (21) is moved from the operation arm (17) to the upper feed position ( ) Extends side, the inner wire of the wire (21) (21
I) is connected to an adjustment lever (25) for the seedling collection amount, and the end of the outer wire (21U) of the wire (21) on the operation arm (17) side is connected to the seedling feed belt (1).
The seedling mounting table (6) arranged below the upper end of (6).
And the inner arm (21I) of the wire (21) is pushed and pulled by the adjusting lever (25) for the amount of seedlings, so that the operation arm (17) is in the standby position ( T) and (t) are changed along the moving direction of the operating arm (17) to change the amount of seedlings fed by the vertical feeding mechanism (8a). Adjustment structure. 3. A mechanism for adjusting a vertical feed mechanism of a rice transplanter according to claim 1, wherein an inner wire (21I) of the wire (21) is directly connected to the operation arm (17). 4. A fixing part (7) of the seedling mounting table (6),
The reinforcing member (7) attached to the seedling mounting table (6) in a lateral direction of the seedling mounting table (6) through a winding path of the seedling feeding belt (16).
3. The structure for adjusting a vertical feed mechanism of a rice transplanter according to any one of 3.